[mob] add workmanager for android

mobile/android/app/build.gradle

@@ -134,4 +134,14 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+
+
+    constraints {
+        implementation("androidx.work:work-runtime:2.8.1") {
+            because("Align work-runtime versions")
+        }
+        implementation("androidx.work:work-runtime-ktx:2.8.1") {
+            because("Align work-runtime-ktx versions")
+        }
+    }
 }

mobile/ios/Podfile.lock

@@ -242,6 +242,8 @@ PODS:
     - Flutter
   - wakelock_plus (0.0.1):
     - Flutter
+  - workmanager (0.0.1):
+    - Flutter
 
 DEPENDENCIES:
   - background_fetch (from `.symlinks/plugins/background_fetch/ios`)
@@ -300,6 +302,7 @@ DEPENDENCIES:
   - video_thumbnail (from `.symlinks/plugins/video_thumbnail/ios`)
   - volume_controller (from `.symlinks/plugins/volume_controller/ios`)
   - wakelock_plus (from `.symlinks/plugins/wakelock_plus/ios`)
+  - workmanager (from `.symlinks/plugins/workmanager/ios`)
 
 SPEC REPOS:
   trunk:
@@ -437,6 +440,8 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/volume_controller/ios"
   wakelock_plus:
     :path: ".symlinks/plugins/wakelock_plus/ios"
+  workmanager:
+    :path: ".symlinks/plugins/workmanager/ios"
 
 SPEC CHECKSUMS:
   background_fetch: 39f11371c0dce04b001c4bfd5e782bcccb0a85e2
@@ -515,6 +520,7 @@ SPEC CHECKSUMS:
   video_thumbnail: c4e2a3c539e247d4de13cd545344fd2d26ffafd1
   volume_controller: 531ddf792994285c9b17f9d8a7e4dcdd29b3eae9
   wakelock_plus: 8b09852c8876491e4b6d179e17dfe2a0b5f60d47
+  workmanager: 0afdcf5628bbde6924c21af7836fed07b42e30e6
 
 PODFILE CHECKSUM: 20e086e6008977d43a3d40260f3f9bffcac748dd
 

mobile/ios/Runner.xcodeproj/project.pbxproj

@@ -16,7 +16,7 @@
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
-		DA6BE5E826B3BC8600656280 /* BuildFile in Resources */ = {isa = PBXBuildFile; };
+		DA6BE5E826B3BC8600656280 /* (null) in Resources */ = {isa = PBXBuildFile; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -197,7 +197,6 @@
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
 						CreatedOnToolsVersion = 7.3.1;
-						DevelopmentTeam = 6Z68YJY9Q2;
 						LastSwiftMigration = 1100;
 						ProvisioningStyle = Automatic;
 					};
@@ -230,7 +229,7 @@
 				3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */,
 				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
 				97C146FC1CF9000F007C117D /* Main.storyboard in Resources */,
-				DA6BE5E826B3BC8600656280 /* BuildFile in Resources */,
+				DA6BE5E826B3BC8600656280 /* (null) in Resources */,
 				277218A0270F596900FFE3CC /* GoogleService-Info.plist in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -342,6 +341,7 @@
 				"${BUILT_PRODUCTS_DIR}/video_thumbnail/video_thumbnail.framework",
 				"${BUILT_PRODUCTS_DIR}/volume_controller/volume_controller.framework",
 				"${BUILT_PRODUCTS_DIR}/wakelock_plus/wakelock_plus.framework",
+				"${BUILT_PRODUCTS_DIR}/workmanager/workmanager.framework",
 				"${PODS_XCFRAMEWORKS_BUILD_DIR}/ffmpeg-kit-ios-min/ffmpegkit.framework/ffmpegkit",
 				"${PODS_XCFRAMEWORKS_BUILD_DIR}/ffmpeg-kit-ios-min/libavcodec.framework/libavcodec",
 				"${PODS_XCFRAMEWORKS_BUILD_DIR}/ffmpeg-kit-ios-min/libavdevice.framework/libavdevice",
@@ -437,6 +437,7 @@
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/video_thumbnail.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/volume_controller.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/wakelock_plus.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/workmanager.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/ffmpegkit.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/libavcodec.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/libavdevice.framework",

mobile/lib/app.dart

@@ -1,8 +1,7 @@
-import "dart:async";
 import 'dart:io';
 
 import 'package:adaptive_theme/adaptive_theme.dart';
-import 'package:background_fetch/background_fetch.dart';
+import "package:background_fetch/background_fetch.dart";
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_easyloading/flutter_easyloading.dart';
@@ -13,23 +12,21 @@ import 'package:media_extension/media_extension_action_types.dart';
 import 'package:photos/ente_theme_data.dart';
 import "package:photos/generated/l10n.dart";
 import "package:photos/l10n/l10n.dart";
+import "package:photos/main.dart";
 import "package:photos/service_locator.dart";
 import 'package:photos/services/app_lifecycle_service.dart';
 import "package:photos/services/home_widget_service.dart";
 import 'package:photos/services/sync_service.dart';
 import 'package:photos/ui/tabs/home_widget.dart';
 import "package:photos/ui/viewer/actions/file_viewer.dart";
 import "package:photos/utils/intent_util.dart";
+import "package:workmanager/workmanager.dart" as workmanager;
 
 class EnteApp extends StatefulWidget {
-  final Future<void> Function(String) runBackgroundTask;
-  final Future<void> Function(String) killBackgroundTask;
   final AdaptiveThemeMode? savedThemeMode;
   final Locale? locale;
 
   const EnteApp(
-    this.runBackgroundTask,
-    this.killBackgroundTask,
     this.locale,
     this.savedThemeMode, {
     super.key,
@@ -45,8 +42,8 @@ class EnteApp extends StatefulWidget {
 }
 
 class _EnteAppState extends State<EnteApp> with WidgetsBindingObserver {
-  final _logger = Logger("EnteAppState");
   late Locale? locale;
+  final _logger = Logger("EnteAppState");
 
   @override
   void initState() {
@@ -87,7 +84,11 @@ class _EnteAppState extends State<EnteApp> with WidgetsBindingObserver {
         : MediaExtentionAction(action: IntentAction.main);
     AppLifecycleService.instance.setMediaExtensionAction(mediaExtentionAction);
     if (mediaExtentionAction.action == IntentAction.main) {
-      _configureBackgroundFetch();
+      if (!enableWorkManager) {
+        _configureBackgroundFetch();
+      } else {
+        _configureWorkManager();
+      }
     }
   }
 
@@ -165,29 +166,68 @@ class _EnteAppState extends State<EnteApp> with WidgetsBindingObserver {
       AppLifecycleService.instance.onAppInBackground(stateChangeReason);
     }
   }
+}
 
-  void _configureBackgroundFetch() {
-    BackgroundFetch.configure(
-        BackgroundFetchConfig(
-          minimumFetchInterval: 15,
-          forceAlarmManager: false,
-          stopOnTerminate: false,
-          startOnBoot: true,
-          enableHeadless: true,
-          requiresBatteryNotLow: true,
-          requiresCharging: false,
-          requiresStorageNotLow: false,
-          requiresDeviceIdle: false,
-          requiredNetworkType: NetworkType.ANY,
-        ), (String taskId) async {
-      await widget.runBackgroundTask(taskId);
-    }, (taskId) {
-      _logger.info("BG task timeout taskID: $taskId");
-      widget.killBackgroundTask(taskId);
-    }).then((int status) {
-      _logger.info('[BackgroundFetch] configure success: $status');
-    }).catchError((e) {
-      _logger.info('[BackgroundFetch] configure ERROR: $e');
-    });
-  }
+final _logger = Logger("BackgroundInitializer");
+
+void _configureWorkManager() {
+  workmanager.Workmanager().initialize(
+    callbackDispatcher,
+    isInDebugMode: kDebugMode,
+  );
+  workmanager.Workmanager().registerPeriodicTask(
+    'backgroundFetchTask',
+    'syncThings',
+    frequency: const Duration(minutes: 15),
+    initialDelay: const Duration(minutes: 1),
+    constraints: workmanager.Constraints(
+      networkType: workmanager.NetworkType.connected,
+      requiresBatteryNotLow: true,
+      requiresCharging: false,
+      requiresStorageNotLow: false,
+      requiresDeviceIdle: false,
+    ),
+    existingWorkPolicy: workmanager.ExistingWorkPolicy.keep,
+    backoffPolicy: workmanager.BackoffPolicy.linear,
+    backoffPolicyDelay: const Duration(minutes: 15),
+  );
+}
+
+void _configureBackgroundFetch() {
+  BackgroundFetch.configure(
+      BackgroundFetchConfig(
+        minimumFetchInterval: 15,
+        forceAlarmManager: false,
+        stopOnTerminate: false,
+        startOnBoot: true,
+        enableHeadless: true,
+        requiresBatteryNotLow: true,
+        requiresCharging: false,
+        requiresStorageNotLow: false,
+        requiresDeviceIdle: false,
+        requiredNetworkType: NetworkType.ANY,
+      ), (String taskId) async {
+    await runBackgroundTask(taskId);
+  }, (taskId) {
+    _logger.info("BG task timeout taskID: $taskId");
+    killBGTask(taskId);
+  }).then((int status) {
+    _logger.info('[BackgroundFetch] configure success: $status');
+  }).catchError((e) {
+    _logger.info('[BackgroundFetch] configure ERROR: $e');
+  });
+}
+
+@pragma('vm:entry-point')
+void callbackDispatcher() {
+  workmanager.Workmanager().executeTask((taskName, inputData) async {
+    try {
+      await runBackgroundTask(taskName);
+      return true;
+    } catch (e) {
+      _logger.info('[WorkManager] task error: $e');
+      await killBGTask(taskName);
+      return false;
+    }
+  });
 }